Silicon(II) coordination chemistry: N-heterocyclic carbene complexes of Si2+ and SiI+

Abstract

Ligand swap: The exchange of N-heterocyclic carbene (NHC) ligands at SiII centers is shown to provide access to a dicationic NHC complex of silicon(II), and an NHC adduct of the iodosilyliumylidene cation SiI +, [SiI(IiPr2Me2)(IDipp)]+ (see picture). Characterization studies led to the discovery of an unprecedented C-H×××Si anagostic interaction for [SiI(IiPr 2Me2)(IDipp)]+. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.